Process for producing alloys of manganese and titanium.



UNITED STATES PATENT OFFICE.

AUGUSTE J. ROSSI, OF NIAGARA FALLS, NEW YORK, ASSIGNOR TO. THE TITANIUM ALLOY MANUFACTURING COMPANY, OF NEW YORK, N Y., A CORPORATION OF MAINE.

PROCESS FOR PRODUCING ALLOYS OF MANGANESE AND TITANIUM.

Specification of Letters Patent,

Patented Apr. 9, 1912.

No Drawing. Original application filed' March 22; 1907, Serial No. 363,959. Divided and this application filed May 4, 1909. Serial No. 493,857.

ing, alloys, in uding those of copper with other metals, su has tin, zinc,'or manganese, the latter being designated as manganese bronzes, and my present application for patent is a division of my application, Serial No. 363,959, filed March 22nd, 1907, Patent No. 935,863.

improvementsiil, and processes for produc The copper of commerce contains impurities, and it has been found tha. admixtures, or alloys therewith of 'certai metals, or elements, such as titanium, prodl ces on such copper, for casting or other purposes, certain beneficial results, for instance reduction, diminutiom or'even elimination of undesired compou'nds or gases present in its molten state, and which cause defects such as pin-holes tending to render such castings unsound and useless. \Vhile commercial copper itself, as say in the form of castings, has been thus purified and improved, the introduction thereinto, in its remolten state, of manganese to produce special bronzes has hitherto produced in the bath a recurrence of conditions unfavorable to the copper and consequent unsoundness, if not uselessness, of the resulting bronzes. Thus, for instance, into the alloy, in molten state, compounds have beenimported and resulting gases developed and occluded, which owing to their maleficent, eifect, especially upon the copper content, have injuriously affected the alloy produced, even in cases in which the copper itself had been, as above stated, previously purified.

My tests have demonstrated that by introducing into the bath of molten copper employed in production of the bronze alloys referred to, manganese, itself previously improved by alloying with titanium, a satisfactory condition of the resulting'alloy'is promoted. ,1

In addition to,its utility for the specific purpose aforesaid, i. e., in making alloys of copper with manganese, or other metals, my novel alloy of maganeseand titanium is also useful when comelted in small quantities with manganese to purify and improve the latter, and also in other employments in the arts.

As titanium exists rarely, if ever, isolated in metallic state, but only as alloyed with other metal, principally iron, or sometimes copper, and none. of thesealloys serve my purpose, it is preferable to derive the required titanium from'its oXid. v

By my present invention the alloy of titanium with manganese is producible by charging into a graphite crucible, or other container properly adapted, manganese, titanic acid, and preferably an oxid of manganese, also such an amount of aluminium (preferably in shots or the like so as to melt more rapidly) as is chemically sufficient to decompose the oxid of titanium and also the oxid of manganese, and reduce their respective titanium and manganese contents totheir metallic states. This mixture is then heated, as by a coke fire, in a wind furnace, or in any of the now well known forms of so-called electric furnaces, or otherwise, to a temperature sufiiciently-high to insure the melting of the metallic element of the charge, and the taking place of the reactions above noted. The molten product, on being withdrawn and cooled will be found to be an alloy of manganese and titanium, the percentage of the latter being proportional to the amounts of titanic acid and aluminium charged, the reactions being as per the following formula, viz

able a large excess of heat due exothermally to the combination of its oxygen with part of the aluminium of the bath. In this manner I have obtained an alloy of manganese with titanium containing ten to fifteen per centum of titanium and more. Moreover such use of an oxid of manganese, or even its substitution entirely for the metal in said process, is sometimes economically desirable, the costof said oxid being usually less than that of the metal, and such entire substitution being feasible in the production of my said alloy bymy said process.

The proportions of the ingredients used in the charge will be varied according to the percentage of the respective metals desired in the alloy according to the formulas above given and as-experience and test in 1 each case willreadily demonstrate to those skilled in the metallurgical art.-

What I claim as new and desire to secure by Letters Patent is the following,

comprises charging into a container a manga-nic substance, titanium oxid, and a reducing agenty heating them sufliciently highly and long to produce a bath containing molten manganese and maintain said bath until said oXid has been reduced therein by said agent, and then Withdrawing the said alloy While molten.

2. The methodof producing the binary alloy of manganese and titanium which comprises charging into a container oxid of manganese,., titanium "oxid, and aluminum, heating Ithem sufficiently highly and long to produce a bath containing molten manganese and maintain sa-id bath until said oxid of titanium has been reduced therein by said aluminum and then withdrawing the said alloy While molten.

AUGUSTE J. ROSSI.

Witnesses:

WALTER D.- EDMQNDS, GEORGE G. MEASURES, 1 PHILIP C. PEoK. 

